Iec 61935-3-2008.Pdf

IEC 61935 3 Edition 1 0 2008 03 INTERNATIONAL STANDARD NORME INTERNATIONALE Testing of balanced and coaxial information technology cabling – Part 3 Installed cabling as specified in ISO/IEC 15018 and[.]

Testing of balanced and coaxial information technology cabling –

Part 3: Installed cabling as specified in ISO/IEC 15018 and related standards

Essais des câblages de technologies de l’information symétriques et coaxiaux –

Partie 3: Câblages installés selon les spécifications de l’ISO/CEI 15018 et des

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Testing of balanced and coaxial information technology cabling –

Part 3: Installed cabling as specified in ISO/IEC 15018 and related standards

Essais des câblages de technologies de l’information symétriques et coaxiaux –

Partie 3: Câblages installés selon les spécifications de l’ISO/CEI 15018 et des

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Marque déposée de la Commission Electrotechnique Internationale

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CONTENTS

FOREWORD 3

INTRODUCTION 5

1 Scope 6

2 Normative references 6

3 Terms and definitions 6

4 Home cabling conformance 7

4.1 Applications to be supported 7

4.2 General 7

4.3 Visual inspection 7

4.4 Verification 7

5 Qualification and certification testing 8

5.1 General 8

5.2 Qualification testing 8

5.3 Certification testing 8

5.4 Documentation 8

6 Qualification field test instrument 9

6.1 General 9

6.2 Cabling configurations tested 9

6.3 Qualification field test parameters 9

6.3.1 Wire map 9

6.3.2 Length 10

6.3.3 Qualification test 10

6.3.4 Test results summary documentation 11

Figure 1 – Correct pairing 9

Figure 2 – Incorrect pairing 10

INTERNATIONAL ELECTROTECHNICAL COMMISSION

TESTING OF BALANCED AND COAXIAL INFORMATION TECHNOLOGY CABLING – Part 3: Installed cabling as specified

in ISO/IEC 15018 and related standards

FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees) The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”) Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work International, governmental and

non-governmental organizations liaising with the IEC also participate in this preparation IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter

5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication

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other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications

8) Attention is drawn to the Normative references cited in this publication Use of the referenced publications is

indispensable for the correct application of this publication

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights IEC shall not be held responsible for identifying any or all such patent rights

International Standard IEC 61935-3 has been prepared by IEC technical committee 46:

Cables, wires, waveguides, R.F connectors, R.F and microwave passive components and

accessories

This bilingual version, published in 2009-04, corresponds to the English version

The text of this standard is based on the following documents:

FDIS Report on voting 46/261/FDIS 46/268/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table

The French version of this standard has not been voted upon

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2

A list of all the parts of the IEC 61935 series, under the general title Testing of balanced and

coaxial information technology cabling, can be found on the IEC website

Future standards in this series will carry the new general title as cited above

The committee has decided that the contents of this publication will remain unchanged until

the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in

the data related to the specific publication At this date, the publication will be

• reconfirmed,

• withdrawn,

• replaced by a revised edition, or

• amended

INTRODUCTION

Telecommunication cabling for homes has evolved into the specification and deployment of

generic cabling This generic cabling system for homes is specified within ISO/IEC 15018

Formerly, there had been no test requirement for home cabling Connectivity tests and visual

inspection were, at best, random and insufficient However, bandwidth requirements of the

home applications are ever increasing and home-owners need assurance that their generic

cabling will indeed support intended network technologies that are delivered to the home and

distributed throughout the home This part of IEC 61935 addresses both verification and

qualification of home cabling

TESTING OF BALANCED AND COAXIAL INFORMATION TECHNOLOGY CABLING – Part 3: Installed cabling as specified

in ISO/IEC 15018 and related standards

1 Scope

This part of IEC 61935 specifies conformance testing for home cabling These conformance

tests include visual inspection, verification testing and either qualification testing or

certification testing Documentation for the test results are also specified

The following referenced documents are indispensable for the application of this document

For dated references, only the edition cited applies For undated references, the latest edition

of the referenced document (including any amendments) applies

IEC 60728-1, Cable networks for television signals, sound signals and interactive services –

Part 1: System performance of forward paths

IEC 60728-12, Cabled distribution systems for television and sound signals – Part 12:

Electromagnetic compatibility of systems

ISO/IEC 11801, Information technology – Generic cabling for customer premises

ISO/IEC 15018, Information technology – Generic cabling for homes

3 Terms and definitions

For the purposes of this document, the following definitions apply

3.1

certification

measurements of installed cabling specified in ISO/IEC 11801 (e.g., class D, class E,

class F); this requires field testers with traceable accuracy to national standards

3.2

qualification

measurements of installed cabling for specific network technologies (e.g., 100BASE-T,

1000BASE-T, IEEE 1394b1)): the measurement accuracy of field testers is not traceable to

national standards

3.3

verification

measurements of installed cable or cabling for continuity; no other transmission performance

parameters other than connectivity are measured

—————————

1) IEEE 1394b: 2002, High Performance Serial Bus (High Speed Supplement)

4 Home cabling conformance

Applications that may be supported in home cabling are:

– ICT: such as 10, 100 1000BASE-T, IEEE 1394 being the most popular;

– analog telephone, ISDN and DSL applications;

– BCT: VHF/UHF TV signals (up to 862 MHz), FM radio signals;

– satellite TV signals, CCTV;

– control applications

4.2 General

Telecommunications cabling (e.g., voice, data, video, security, audio, control) can be

damaged during the construction phases of rough-in, drywall installation, and even during the

siding of the exterior Many of these damaging faults result from causes such as nails and

staples penetrating the cable, severe kinks in the cable where the cable was pulled through a

drilled hole in a stud or joist, or a cable tear where the cable sheath and conductors are

damaged from pulling the cable For these reasons, telecommunications cabling shall yield to

a process to ensure conformance This process includes:

a) visual examination of the cabling;

b) verification testing of the cabling;

c) qualification testing or certification testing of the cabling, and

d) producing a documented report of results

Visual examination and verification

Qualification application specific

Certification generic cabling

IEC 277/08

Whenever it is possible, visual inspection of each cable run shall be made after the cable has

been installed, but prior to installation of insulation and drywall Visual inspection may include

but is not limited to

a) obvious damage to cable (condition and workmanship);

b) separation from EMC sources;

c) incorrect bend radi, and

d) noticeable excessive cable length

4.4 Verification

Verification testing is performed after cable placement and prior to the installation of

insulation and drywall and shall be performed to ensure proper end-to-end connectivity

Coaxial cable shall be verified to ensure connectivity to the remote end with an absence of

shorts between the centre conductor and the outer shield Twisted-pair cabling verification

tests shall include:

a) continuity to the remote end;

b) length,

c) no shorts between any two or more conductors;

d) crossed pairs;

e) reversed pairs,

f) split pairs, and

g) any other mis-wiring;

h) continuity of screens (if any)

Verification testing for twisted pair shall be accomplished with connectors on both ends of the

cable Nevertheless, temporary housings may be used for later finish-out of the cabling

Verification testing for cables used in certain applications may not be terminated at both ends

with an 8-position modular jack (for example audio cable for speakers or cable for control

systems)

5 Qualification and certification testing

5.1 General

Qualification or certification testing of the cabling shall be performed after the trim-out of

cabling Typically, certification testing is performed for the rigorous needs of home cabling for

commercial use while qualification testing is performed for dwelling homes

Qualification testing will determine if the cabling will support certain network technologies

(e.g., 1000BASE-T, 100BASE-T, IEEE 1394) For example two cabling runs (cable A and

cable B) pass the verification test A qualification test may show that cable A is only capable

of supporting 10BASE-T, while cable B is able to support Gigabit Ethernet Qualification

testers do not have traceable accuracy to national standards but do provide confidence that

specific applications will work

Certification testing will determine if the cabling meets or exceeds the specific cabling

measurements specified in ISO/IEC 118012) For example, installed class D cabling is

measured in the frequency range of 1 MHz to 100 MHz for specific cabling characteristic

requirements such as propagation delay, delay skew, insertion loss, NEXT, PSNEXT,

ELFEXT, PSELFEXT and return loss Certification testers have traceable accuracy to national

standards, and certification testing is recommended for mission critical cabling installations

where defects can cause significant economic damages to the network owner

5.4 Documentation

The qualification tests shall be summarized within a documented report generated by the test

instrument A copy of the test results summary shall be provided to the owner of the home as

well as placed in the distribution centre

—————————

2) The measurements are specified in ISO/IEC 11801, second edition, 2002

6 Qualification field test instrument

6.1 General

This clause applies to field test measurements of installed home cabling designed in

accordance with ISO/IEC 15018

The information contained in this clause uses the links defined in ISO/IEC 15018 and

specifies parameters for qualification field testers

The cabling test configurations are described in ISO/IEC 15018

A conductor map test is intended to verify correct pin termination of the 8-pin connectors at

each end of twisted pair cabling and to check for installation connectivity errors For each of

the conductors in the cable and the screen(s), if any, the conductor map indicates:

a) continuity to the remote end;

b) shorts between any two or more conductors/screen(s);

c) transposed pairs;

d) reversed pairs;

e) split pairs;

f) any other connection errors;

g) continuity of screens (if any)

Correct connectivity of telecommunications outlet/connectors is defined in ISO/IEC 15018 (or

equivalent) and is illustrated in Figure 1(for four pair cables)

IEC 278/08

Figure 1 – Correct pairing

A reversed pair occurs when the polarity of one wire pair is reversed at one end of the link

(also called a tip/ring reversal) See Figure 2a for an illustration of a reversed pair

A transposed pair occurs when the two conductors in a wire pair are connected to the position

for a different pair at the remote connection See Figure 2b for an illustration of transposed

pairs

NOTE Transposed pairs are sometimes referred to as crossed pairs

Split pairs occur when pin to pin continuity is maintained but physical pairs are separated

See Figure 2c for an illustration of split pairs

Figure 2a – Reversed pairs

Figure 2 – Incorrect pairing

Wire map tests shall report PASS if cabling is determined to be correct

6.3.2 Length

The physical length of the cabling is defined as the sum total of the physical length of the

cabling between the defined reference planes The physical length may be determined by

measuring the lengths of the components that make up the cabling The length of cable

segments may be determined from the length markings on the cables, when present

The lengths can also be estimated from an electrical length measurement The electrical

length is derived from the propagation delay of signals and depends on the twist helix and

dielectric material

The maximum lengths of the home cabling are specified in ISO/IEC 15018

6.3.3.1 General

Qualification tests analyze the network capability of cable by injecting signals and analyzing

their responses, including any interfering signals that are within its field of influence The

resulting analyses of these signals are then compared to known network technology

requirements The result can then be saved to the test instrument for producing

documentation

Signal level is accessed either by direct measurement or by an insertion loss measurement

When the signal is not available, the insertion loss measurement will be performed and will

give information upon the minimum signal to be used at the input port of the cabling to get the

desired level at the broadcast outlet (BO) The result shall conform to the IEC 60728-1

requirements

The measurement can be performed at the BO interface or at the output port of the equipment

cord (coaxial port of the balun), depending upon the balun location

In case the measurement is performed at the BO interface, provision should be taken

according to the supplier information to take into account the insertion loss of the balun

Signal level is accessed either by direct measurement or by an insertion loss measurement

The result shall conform to the IEC 60728-1 requirements

6.3.3.2.3 Crosstalk

In case of sharing two applications in the same cable the crosstalk should be considered as a

limiting factor

Instead of a crosstalk measurement, a noise measurement can be done

The result shall conform to the IEC 60728-1 requirements

Signal level is accessed either by direct measurement or by an insertion loss measurement

When the signal is not available, the insertion loss measurement will be performed and will

give information upon the minimum signal to be used at the input port of the cabling to get the

desired level at the BO

The result shall conform to the IEC 60728-1

Signal level is accessed either by direct measurement or by an insertion loss measurement

The result shall conform to the IEC 60728-1

When required by local regulation, the screening effectiveness of the cabling shall be tested

by performing a measurement of radiated field according to the IEC 60728-12 Results will be

checked against the local regulation

The field test equipment shall be capable of reporting the following minimum summary

information for each cable run:

f) network technologies supported;

g) network technologies unsupported;

h) test instrument manufacturer and model;

i) test instrument user;

j) test instrument software version

_